Directed reaction process and structural study of single-phase superconducting compound YBa2Cu3O6.5+δ
Creators
- 1. Northeast Univ. of Technology, Shenyang, Liaoning (China)
Description
A directed reaction process based on physico-chemical principles have been designed for producing single-phase 90 Κ ''zero-resistance'' superconducting compound YBa2Cu3O6.5+δ. The reliability of the process has been well proved by the stability and reproducibility of results in resistance and AC magnetic susceptibility measurements of seven samples taken randomly from three batches of products. X-ray diffraction, SEM and TEM examinations have identified the product as a single-phase polycrystalline material of orthorhombic structure with lattice parameters a = 3.89 A, b = 3.82 A and c = 11.65 A. Many micro-twinned defects were observed under TEM along [110] axes. The nonstoichiometric fraction, δ value, was determined using a physico-chemical method
Additional details
Publishing Information
- Journal Title
- International Journal of Modern Physics B
- Journal Volume
- 1
- Journal Issue
- 4
- Series
- Int. J. Mod. Phys. B.
- Journal Page Range
- 181-186
- ISSN
- 0217-9792
- CODEN
- IJPBE
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21004678
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; LATTICE PARAMETERS; MAGNETIC SUSCEPTIBILITY; ORTHORHOMBIC LATTICES; PHASE STUDIES; POLYCRYSTALS; SCANNING ELECTRON MICROSCOPY; SUPERCONDUCTORS; TRANSMISSION ELECTRON MICROSCO; X-RAY DIFFRACTION; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CRYSTALS; DIFFRACTION; ELECTRON MICROSCOPY; MAGNETIC PROPERTIES; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS